q-Phase Transitions and Dynamic Scaling Laws at Attractor-Merging Crises in the Driven Damped Pendulum

1990 ◽  
Vol 83 (4) ◽  
pp. 649-654 ◽  
Author(s):  
T. Murayama ◽  
H. Tominaga ◽  
H. Mori ◽  
H. Hata ◽  
T. Horita
Keyword(s):  
Phase Transitions ◽  
Scaling Laws ◽  
Dynamic Scaling

scholarly journals Lab-Scale Experimental Characterization and Dynamic Scaling Assessment for Closed-Loop Crosswind Flight of Airborne Wind Energy Systems

2018 ◽  
Vol 140 (7) ◽  
Author(s):  
Mitchell Cobb ◽  
Nihar Deodhar ◽  
Christopher Vermillion
Keyword(s):  
Wind Energy ◽  
Scaling Laws ◽  
Closed Loop ◽  
Full Scale ◽  
Dynamic Scaling ◽  
Loop Control ◽  
Flow Speeds ◽  
Stationary Operation ◽  
Scale Control ◽  
Scale Behavior

This paper presents the experimental validation and dynamic similarity analysis for a lab-scale version of an airborne wind energy (AWE) system executing closed-loop motion control. Execution of crosswind flight patterns, achieved in this work through the asymmetric motion of three tethers, enables dramatic increases in energy generation compared with stationary operation. Achievement of crosswind flight in the lab-scale experimental framework described herein allows for rapid, inexpensive, and dynamically scalable characterization of new control algorithms without recourse to expensive full-scale prototyping. We first present the experimental setup, then derive dynamic scaling relationships necessary for the lab-scale behavior to match the full-scale behavior. We then validate dynamic equivalence of crosswind flight over a range of different scale models of the Altaeros Buoyant airborne turbine (BAT). This work is the first example of successful lab-scale control and measurement of crosswind motion for an AWE system across a range of flow speeds and system scales. The results demonstrate that crosswind flight can achieve significantly more power production than stationary operation, while also validating dynamic scaling laws under closed-loop control.

Dynamic scaling laws and ϵ-expansion in Bose systems

1974 ◽  
Vol 47 (5) ◽  
pp. 361-362 ◽  
Author(s):  
M. Suzuki ◽  
G. Igarashi
Keyword(s):  
Scaling Laws ◽  
Dynamic Scaling

Determining Dynamic Scaling Laws of Geometrically Distorted Scaled Models of a Cantilever Plate

2016 ◽  
Vol 142 (4) ◽  
pp. 04015108 ◽  
Author(s):  
Zhong Luo ◽  
Yunpeng Zhu ◽  
Xueyan Zhao ◽  
Deyou Wang
Keyword(s):  
Scaling Laws ◽  
Dynamic Scaling ◽  
Cantilever Plate ◽  
Scaled Models

DYNAMIC SCALING FOR FIRST-ORDER PHASE TRANSITIONS

2000 ◽  
Vol 11 (03) ◽  
pp. 553-559
Author(s):  
BANU EBRU ÖZOĞUZ ◽  
YIĞIT GÜNDÜÇ ◽  
MERAL AYDIN
Keyword(s):  
Phase Transitions ◽  
Finite Size ◽  
Two Dimensions ◽  
Dynamic Scaling ◽  
Finite Size Scaling ◽  
Potts Models ◽  
Time Dynamics ◽  
First Order ◽  
Short Time ◽  
First Order Phase

The critical behavior in short time dynamics for the q = 6 and 7 state Potts models in two-dimensions is investigated. It is shown that dynamic finite-size scaling exists for first-order phase transitions.

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